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【简答题】
用分析天平称量的方法有哪些?固定质量称量法和递减称量法各有何优缺点?在什么情况下选用这两种方法?如使用的是电子天平,如这两种方法的称重更好?
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参考答案：
举一反三
【判断题】个人的节约行为也是清洁生产的一部分。
A.
正确
B.
错误
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【单选题】抽取血液,经抗凝、离心沉淀后,血液分为三层,从上至下为
A.
血清，白细胞，红细胞
B.
血清，红细胞，白细胞
C.
血浆，白细胞和血小板，红细胞
D.
血浆，红细胞，白细胞
E.
血浆，血小板，红细胞和白细胞
查看完整题目与答案
【单选题】二极管能保持正向电流几乎为零的最大正向电压称为（      ）。
A.
死区电压
B.
击穿电压
C.
截止电压
D.
峰值电压
查看完整题目与答案
【单选题】二极管能保持正向电流几乎为零的最大正向电压称为( )。
A.
截止电压
B.
击穿电压
C.
峰值电压
D.
死区电压
查看完整题目与答案
【单选题】二极管能保持正向电流几乎为零的最大正向电压称为 ______ 。
A.
击穿电压
B.
截止电压
C.
峰值电压
D.
死区电压
查看完整题目与答案
【判断题】侧副沟与枕颞沟间为枕颗内侧回,枕颎沟下方为枕颖外侧回。( )
A.
正确
B.
错误
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【单选题】I'm sure they must have been afraid of ____( 被感染) , but they did not show it.
A.
being moved
B.
being hurt
C.
being infected
D.
being made
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【单选题】Some women a good salary in a job instead of staying home, but they decided not to work for the sake of the family. A. must make B. should have made C. would make D. could have made
A.
must make
B.
should have made
C.
would make
D.
could have made
查看完整题目与答案
【单选题】They must have made a right decision ,____they?
A.
mustn't
B.
needn't
C.
havn't
D.
didn't
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【单选题】Indicate which of the proposed reconstructions best captures the argument in the following passages from Steven Jay Gould, "The Panda's Thumb". Orchids were not made by an ideal engineer; [since] they...
A.
(1) Orchids were not made by an ideal engineer. (2) Orchids are jury-rigged from a limited set of available components. ____________________________ ∴ (3) Orchids must have evolved from ordinary flowers. (from 1-2)
B.
(1) Orchids were not made by an ideal engineer. (2) Organisms that were not made by an ideal engineer must have evolved from ordinary organisms of the same kind. ____________________________ ∴ (3) Orchids must have evolved from ordinary flowers. (from 1-2) (4) Orchids are jury-rigged from a limited set of available components. (5) Organisms that are jury-rigged from a limited set of available components must have evolved from ordinary organisms of the same kind. ____________________________ ∴ (3) Orchids must have evolved from ordinary flowers. (from 4-5)
C.
(1) Orchids are jury-rigged from a limited set of available components. (2) Organisms that are jury-rigged from a limited set of available components were not made by an ideal engineer. (3) Orchids are organisms. ____________________________ ∴ (4) Orchids were not made by an ideal engineer. (from 1-3) (5) Organisms that were not made by an ideal engineer must have evolved from ordinary organisms of the same kind. (6) Orchids are a kind of flower. ____________________________ ∴ (7) Orchids must have evolved from ordinary flowers. (from 3-6)
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相关题目：
【判断题】个人的节约行为也是清洁生产的一部分。
A.
正确
B.
错误
查看完整题目与答案
【单选题】抽取血液,经抗凝、离心沉淀后,血液分为三层,从上至下为
A.
血清，白细胞，红细胞
B.
血清，红细胞，白细胞
C.
血浆，白细胞和血小板，红细胞
D.
血浆，红细胞，白细胞
E.
血浆，血小板，红细胞和白细胞
查看完整题目与答案
【单选题】二极管能保持正向电流几乎为零的最大正向电压称为（      ）。
A.
死区电压
B.
击穿电压
C.
截止电压
D.
峰值电压
查看完整题目与答案
【单选题】二极管能保持正向电流几乎为零的最大正向电压称为( )。
A.
截止电压
B.
击穿电压
C.
峰值电压
D.
死区电压
查看完整题目与答案
【单选题】二极管能保持正向电流几乎为零的最大正向电压称为 ______ 。
A.
击穿电压
B.
截止电压
C.
峰值电压
D.
死区电压
查看完整题目与答案
【判断题】侧副沟与枕颞沟间为枕颗内侧回,枕颎沟下方为枕颖外侧回。( )
A.
正确
B.
错误
查看完整题目与答案
【单选题】I'm sure they must have been afraid of ____( 被感染) , but they did not show it.
A.
being moved
B.
being hurt
C.
being infected
D.
being made
查看完整题目与答案
【单选题】Some women a good salary in a job instead of staying home, but they decided not to work for the sake of the family. A. must make B. should have made C. would make D. could have made
A.
must make
B.
should have made
C.
would make
D.
could have made
查看完整题目与答案
【单选题】They must have made a right decision ,____they?
A.
mustn't
B.
needn't
C.
havn't
D.
didn't
查看完整题目与答案
【单选题】Indicate which of the proposed reconstructions best captures the argument in the following passages from Steven Jay Gould, "The Panda's Thumb". Orchids were not made by an ideal engineer; [since] they...
A.
(1) Orchids were not made by an ideal engineer. (2) Orchids are jury-rigged from a limited set of available components. ____________________________ ∴ (3) Orchids must have evolved from ordinary flowers. (from 1-2)
B.
(1) Orchids were not made by an ideal engineer. (2) Organisms that were not made by an ideal engineer must have evolved from ordinary organisms of the same kind. ____________________________ ∴ (3) Orchids must have evolved from ordinary flowers. (from 1-2) (4) Orchids are jury-rigged from a limited set of available components. (5) Organisms that are jury-rigged from a limited set of available components must have evolved from ordinary organisms of the same kind. ____________________________ ∴ (3) Orchids must have evolved from ordinary flowers. (from 4-5)
C.
(1) Orchids are jury-rigged from a limited set of available components. (2) Organisms that are jury-rigged from a limited set of available components were not made by an ideal engineer. (3) Orchids are organisms. ____________________________ ∴ (4) Orchids were not made by an ideal engineer. (from 1-3) (5) Organisms that were not made by an ideal engineer must have evolved from ordinary organisms of the same kind. (6) Orchids are a kind of flower. ____________________________ ∴ (7) Orchids must have evolved from ordinary flowers. (from 3-6)
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